added initial support for cmake

Note: make install is currently not supported

CMakeLists.txt

@@ -0,0 +1,71 @@
+cmake_minimum_required(VERSION 3.2)
+include(CMakeDependentOption)
+include(CPack)
+include(CheckFunctionExists)
+
+project(mbusd VERSION 0.2.4)
+
+#TODO  ISC_Posix,  prog_libtool
+# single-configuration generator setup
+SET(BASIC_C_FLAGS "-W -pedantic -fno-builtin-log -Wall")
+SET(CMAKE_C_FLAGS_RELEASE   "${BASIC_C_FLAGS} -O2")
+SET(CMAKE_C_FLAGS_DEBUG     "${BASIC_C_FLAGS} -g")
+
+add_definitions(-DPACKAGE="${PROJECT_NAME}" -DVERSION="${PROJECT_VERSION}")
+
+# user options
+option (TRXCTL "Support RS-232 to RS-485 converter data direction control" ON)
+if(TRXCTL)
+    add_definitions(-DTRXCTL)
+endif()
+option (LOG "enabling logging facility via logw" ON)
+check_function_exists(logw HAVE_LOGW)
+if(HAVE_LOGW AND LOG)
+    add_definitions(-DLOG)
+endif()
+CMAKE_DEPENDENT_OPTION(DEBUG_LOG "extra debug log info" OFF "LOGW" OFF)
+if(DEBUG_LOG)
+    add_definitions(-DDEBUG)
+endif()
+
+## check for and pass preprocessor flags
+check_function_exists(cfmakeraw  HAVE_CFMAKERAW)
+if(HAVE_CFMAKERAW)
+    add_definitions(-DHAVE_CFMAKERAW)
+endif()
+check_function_exists(cfsetspeed  HAVE_CFSETSPEED)
+check_function_exists(cfsetispeed HAVE_CFSETISPEED)
+if(HAVE_CFSETSPEED AND HAVE_CFSETISPEED)
+    add_definitions(-DHAVE_CFSETSPEED)
+endif()
+check_function_exists(time HAVE_TIME)
+check_function_exists(localtime HAVE_LOCALTIME)
+if(HAVE_TIME AND HAVE_LOCALTIME)
+    message("passing HRDATE to compiler space")
+    add_definitions(-DHRDATE)
+endif()
+
+include(CheckLibraryExists)
+find_library(LIB_UTIL NAMES libutil util)
+check_library_exists(util tty_get_name LIB_UTIL HAVE_TTY_GET_NAME)
+check_library_exists(util uu_lock LIB_UTIL HAVE_UU_LOCK)
+if(LIB_UTIL AND HAVE_TTY_GET_NAME AND HAVE_UU_LOCK)
+    message("passing HAVE_LIBUTIL to compiler space")
+    add_definitions(-DHAVE_LIBUTIL)
+endif()
+
+
+set(mbusd_SOURCES
+    src/main.c
+    src/tty.c
+    src/log.c
+    src/cfg.c
+    src/conn.c
+    src/queue.c
+    src/modbus.c
+    src/crc16.c
+    src/state.c
+    src/sig.c
+    src/sock.c
+)
+add_executable(mbusd ${mbusd_SOURCES})

README.md

@@ -39,6 +39,15 @@ $ make
 $ make clean
 </pre>
 
+Compilation using cmake
+<pre>
+$ git clone https://github.com/3cky/mbusd.git mbusd.git
+$ cd mbusd.git
+$ mkdir -p output.dir && cd output.dir
+$ cmake ../
+$ make
+</pre>
+
 Usage:
 ------
 

src/globals.h

@@ -63,15 +63,6 @@
 #  include <libutil.h>
 #endif
 
-/*
- * Uncomment this for enabling logging facility
- */
-#define LOG
-#ifdef LOG
-/* uncomment this line for extra debug log info */
-#  define DEBUG
-#endif
-
 /*
  * Useful min/max macroses
  */

src/log.h

@@ -46,6 +46,8 @@ extern int isdaemon;
 int log_init(char *logname);
 int log_app(char *logname, char *string);
 void logw(int level, char *fmt, ...);
+#else
+    #define logw(fmt, ...) {}
 #endif
 
 #endif /* _LOG_H */

src/main.c

@@ -85,12 +85,12 @@ daemon(nochdir, noclose)
   if (!nochdir)
     (void)chdir("/");
 
-  if (!noclose && (fd = _open("/dev/null", O_RDWR, 0)) != -1) {
+  if (!noclose && (fd = open("/dev/null", O_RDWR, 0)) != -1) {
     (void)dup2(fd, STDIN_FILENO);
     (void)dup2(fd, STDOUT_FILENO);
     (void)dup2(fd, STDERR_FILENO);
     if (fd > 2)
-      (void)_close(fd);
+      (void)close(fd);
   }
   return (0);
 }